Let’s be honest solar panels have always felt like one of those “one day” upgrades. Something we should do, but probably after we’ve sorted out the kitchen, the boiler, the dodgy fence at the back.
But in 2025, that “someday” might finally be today. Why? Because the numbers are starting to make serious sense.
Here’s a proper look no fluff, no confusing tech lingo at what you’ll actually pay for solar panels in london this year, and what you’re getting for your money.
So, What Are You Actually Buying?
When people say, “solar panels,” they usually mean the whole package. It’s not just the panels bolted to the roof — it’s the system behind it all. That includes:
- The solar panels themselves (those black or blue rectangles)
- An inverter (this turns the power into something your house can use)
- Mounting gear to fix everything safely to your roof
- The cost of getting it all installed
- Optional extras like a battery or smart monitoring app
- Warranties, inspections, support the boring but important stuff
Think of it like a home renovation project. You’re not just buying tiles you’re paying for plumbing, fitting, finish, and future-proofing.
The Big Question: How Much?
Prices vary based on your roof, system size, and whether you go for solar battery Croydon storage. But here’s a general idea of what homeowners are paying in 2025:
| System Size | Typical Cost (No Battery) | With Battery |
|---|---|---|
| 3kW | £5,000 – £6,000 | £7,500 – £8,500 |
| 4kW | £6,000 – £7,000 | £8,500 – £9,500 |
| 6kW | £7,500 – £8,500 | £10,000 – £11,000 |
Why Some Systems Cost More Than Others
No two homes are the same. That’s why solar quotes can vary more than you’d expect.
Here’s what tends to push the price up or down:
- Roof angle and shape awkward roofs = more effort
- Any shading from trees, chimneys, neighbours
- Type of panels (mono vs polycrystalline makes a difference)
- Where you live London pricing ≠ Leeds pricing
- Battery storage not essential, but increasingly popular
- Extras like online monitoring, upgraded warranties, or premium brands
The more straightforward your roof and setup, the closer you’ll land to the low end of the range.
Is There Still VAT?
Thanks to a recent push to promote green energy, the UK government has removed VAT on domestic solar installations in Croydon. That’s an automatic 20% saving. You don’t need to apply for it or jump through hoops — it’s just taken off the bill.
Nice, right?
How Do These Prices Compare to a Few Years Ago?
Honestly? Solar used to be more expensive. A lot more.
Back in 2010, a similar system might have cost double. But things have changed the tech has improved, installers are more efficient, and competition has driven prices down.
That said, prices have now levelled off. If you’re hoping for a further drop, you might be waiting a while and missing out on potential savings in the meantime.
What About Adding a Battery?
Good question.
Not everyone needs one, but if your energy usage is heavier in the evenings, or you want to get closer to energy independence, a battery makes sense.
It’ll add £2,000–£3,000 to your setup. But over the years, it lets you store your extra solar power instead of sending it back to the grid. That means fewer units pulled from your supplier, especially when tariffs rise.
Some people add one later, once they’ve seen how their system performs.
When Do You Break Even?
Most UK homeowners see a full return on their solar investment in 6 to 8 years.
Here’s what affects that:
- Your energy usage
- How much you generate (roof size, angle, weather)
- Whether you get paid for exporting energy (you can, via SEG)
- If you went for battery storage
- Any grants or local schemes you tapped into
After the break-even point, your panels just keep producing and saving you money for another 15 to 20 years.
Can You Spread the Cost?
Definitely.
Many solar companies near me now offer finance, either directly or through green lending partners. You can get:
- Flexible monthly payment
- Green home improvement loans through your mortgage provider
Final Word: What Should You Budget For?
If you’re looking for a ballpark:
- Basic system (no battery): around £6,000 – £7,000
- With battery: closer to £8,000 – £9,500
Yes, it’s a decent upfront spend. But with today’s energy prices, a properly installed system can pay for itself within a decade and keep running for two more after that.
FAQs
Do solar panels still save money in 2025?
Absolutely. Rising electricity rates make solar savings more appealing than ever.
Can I add a battery later?
Yes, many people do. Just make sure your installer sets up your system to allow it.
Will I still have an energy bill?
You’ll likely still pay something especially in winter. But many homes cut their bills by up to 70%.
Are there hidden costs to watch for?
Not if you go with a reputable MCS, NAPIT, HIES, EVPS accredited installer like Evergreen Power.
Written by: Kyler Walter
- Kyler Walter is a passionate advocate for renewable energy and sustainable living. As a leading voice at Evergreen Power UK, he specializes in solar energy solutions and has played a vital role in promoting innovative, eco-conscious technologies across the UK.
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